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VOLUNTEER: If you’ve got the day off with not much to do, consider volunteering with Thames21 to help green-up the concrete walls of the River Lea. Just turn up at the Bow Lock office (map here) and they’ll kit you up and get you going. Free, just turn up, 10.30am

CRIME FICTION: Bigwigs from the genre, including PD James, assemble at the British Library to discuss the history of crime fiction. £7.50, prebook, 6.30pm

SEWAGE: Find out more about our water and sewage infrastructure and how Thames Water is “rising to the challenge…” at The Adelaide in Teddington. Free, prebook, 7pm

GIGS: Loads and loads of small gigs happening tonight. Rather than list ‘em out or try and pick the best, take a look at the schedule on London Gigs.

BRIGHT CLUB: This month, Bright Club teams up with Camden LGBT Forum as part of LGBT History Week. The speakers — a heady mix of academics and comedians — celebrates some of the contributions made by LGBT people to science, history and culture, as well as exploring the science of sexuality. £8, prebook,7.30pm

COMEDY: Crack Comedy in Wimbledon presents a night of sketch, with The Beta Males, The Real MacGuffins and Joseph Morpurgo, who you may have seen in brilliant improv group Austentatious. £10/£6, prebook or turnup, 8pm

Random London Fact of the DayThe major junction at Grosvenor Place and Hobart Place, round the back of Buckingham Palace, was until 1823 used as a site of burial for suicides. So notes Peter Ackroyd in his book Under London, with the usual frustrating lack of reference. “It may therefore be deemed an unlucky spot,” he posits.

Good Cause of the DaySend tips to matt@londonist.com

Buy stuff you would anyway, and help raise the employment prospects of disabled Londoners. Today’s shout-out goes to CLARITY, one of London’s oldest disability charities, which has been providing employment and training for blind and disabled people since 1854. Their London-based factory makes toiletries, soaps and household cleaning products. Many of the people who work in the factory are blind and registered disabled, and the charity offers programmes to allow people to develop skills and build employability. Essentially, they’re asking people not just to part with money but to buy products they would buy anyway, from CLARITY, to support their work. You can brose their product lines here, and make purchases via PayPal.

London WeatherBad news: It’s going to remain cold and grey with a reasonable chance of rain over the next three days. Good news: Your weather correspondent is taking a week’s holiday, so doesn’t care. Bad news: He’s going to Grimsby, where the weather is everything you’d expect. Good news: Armed with that information, you now know when he’s out, and can go steel his door mat. Bad news: He doesn’t have a door mat. Good news: This all means that someone with a bit more sense will be writing the weather reports next week. See you in 10 days, weather watchers! BBC Weather has a more stable forecast.